I just wanted to bump this issue as I've been experiencing it without
fail for the last two days and the posted workaround has not resolved
the issue. Currently running 11.10 x64. My command line has been:
sudo vmbuilder kvm ubuntu -v --debug --suite=lucid --flavour=virtual
--rootsize=4096 --swapsize=1024 --mem=388 --arch=i386 --user=system
--pass=changemenow --components=main,universe,restricted --addpkg=acpid
--addpkg=openssh-server -o --libvirt qemu:///system
The error noted before crashing out has consistently been:
2012-03-16 13:59:53,564 ERROR : Process (['umount', '/tmp/tmptaOMHF/dev'])
returned 1. stdout: , stderr: umount: /tmp/tmptaOMHF/dev: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
Traceback (most recent call last):
File /usr/bin/vmbuilder, line 24, in module
cli.main()
File /usr/lib/python2.7/dist-packages/VMBuilder/contrib/cli.py, line 216,
in main
distro.build_chroot()
File /usr/lib/python2.7/dist-packages/VMBuilder/distro.py, line 84, in
build_chroot
self.call_hooks('configure_os')
File /usr/lib/python2.7/dist-packages/VMBuilder/distro.py, line 67, in
call_hooks
call_hooks(self, *args, **kwargs)
File /usr/lib/python2.7/dist-packages/VMBuilder/util.py, line 165, in
call_hooks
getattr(context, func, log_no_such_method)(*args, **kwargs)
File /usr/lib/python2.7/dist-packages/VMBuilder/plugins/ubuntu/distro.py,
line 155, in configure_os
self.suite.unmount_dev()
File /usr/lib/python2.7/dist-packages/VMBuilder/plugins/ubuntu/dapper.py,
line 125, in unmount_dev
run_cmd('umount', '%s/dev' % self.context.chroot_dir)
File /usr/lib/python2.7/dist-packages/VMBuilder/util.py, line 120, in
run_cmd
raise VMBuilderException, Process (%s) returned %d. stdout: %s, stderr:
%s % (args.__repr__(), status, mystdout.buf, mystderr.buf)
VMBuilder.exception.VMBuilderException: Process (['umount',
'/tmp/tmptaOMHF/dev']) returned 1. stdout: , stderr: umount:
/tmp/tmptaOMHF/dev: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
Prior to the crash, mount indicates indeed, the file (/tmp/tmptaOMHF/dev
in this case) is still mounted, the file is also notable in /etc/mtab
post-crash.
I've noted that in the lsof results inserted just prior to the mount call,
there appear to be three cron processes still accessing /dev/null within the
mounted environment (i.e. /tmp/tmptaOMHF/dev/null). I'm attaching a log which
contains the results output from the inserted:
run_cmd('lsof', '%s/dev' % self.context.chroot_dir) line onward until
vmbuilder exits, crashing.
I have successfully built several VMs on this particular machine in the
past, using the exact same command, so I was a bit surprised to be
running into this issue now, any ideas?
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https://bugs.launchpad.net/bugs/879710
Title:
ubuntu-vm-builder crashes when trying to umount tmp directory.
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